A retail investor who used 'copy trading' to help grow his portfolio to 7 figures explains his strategy

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• "Copy trading" has become a popular trading strategy in recent years.
• A day trader says he boosted his portfolio to seven figures using the strategy.
• He mirrored bets on stocks disclosed in filings from US politicians.

If you asked Ariel Itzhak what the best decision he has ever made is, he would say copying Nancy Pelosi's stock trades.

The former Speaker of the House has garnered a meme-like reputation among retail...